#include <stddef.h>
#include <stdio.h>
#include <sys/time.h>
#include <time.h>
#include <string.h>
#include <inttypes.h>

//#define TESTTYPEARR float
#define TESTTYPEARR uint32_t

#define STEP_MAX (1<<10ULL)
#define TIMES 2048
#define RUNS 10

volatile TESTTYPEARR fl_arr[TIMES*STEP_MAX] = {0};

long int gettime(unsigned int step, unsigned int times)
{
  struct timespec before, after;

  size_t index = 0;
  for (unsigned int i = 0; i < times; i++)
  {
    fl_arr[index] = 0;
    index += step;
  }
  clock_gettime(CLOCK_REALTIME, &before);

  index = 0;
  for (unsigned int i = 0; i < times; i++)
  {
    fl_arr[index] = 0;
    index += step;
  }
  clock_gettime(CLOCK_REALTIME, &after);

  return (after.tv_nsec - before.tv_nsec);
}

long int arr_tmp[RUNS*STEP_MAX];

int main(void)
{
  long int *a = arr_tmp;
  long int ar[RUNS];
  for (unsigned int j = 1; j < (STEP_MAX+1); j++)
  {
    //printf("%u :\n",j);
    for (unsigned int i = 0; i < RUNS; i++)
    {
      ar[i] = gettime(j,TIMES);
    }
    memcpy(a, ar, sizeof(ar));
    for (unsigned int i = 0; i < RUNS; i++)
    {
      printf("%ld\t",a[i]);
    }
    printf("\n");
    a += RUNS;
  }
/*
  for (unsigned int i = 0; i < RUNS; i++)
  {
    for (unsigned int j = 0; j < STEP_MAX; j++)
    {
      printf("%ld\n", arr_tmp[i+RUNS*j]);
    }
    printf("\n");
  }
*/
  return 0;
}